Help! anodizing axe and mini problems

So I'm working on disassembly of these two guns and hit two problems. One is on the mini were the bolt goes is the back of the gun , there is what looks like a steel pin that lines the bolt guide up with the body. Any methods on how to get this out? Second goes for both guns , how do you get the steel studs out of the detent covers? Any help or thoughts on this would be great.

Ya I Just recently anodize a axe and missed the steel that was in the detent covers. The steel was completely gone (melted) and it didnt hurt the aluminum or burn it, but what I did notice when I went to dye it is it took the color alot faster than all the other pieces. I just need to find a way around this ... how to get the steel out or covering it up.